"Why these settings aren't the default on Linux completely
bewilders me. How does anyone conceive that the average user will
not want reliable cut and paste between their editor and other
apps? Certainly most users will not be willing or able to go
through what I did to get this sorted out.
"The problem that I was seeing was that sometimes middle mouse
click would work for cut and paste, and sometimes it wouldn't. It
was very erratic, even within the same emacs session..."